The more I try to do Ariya Metta Bhavana, the more my mind becomes heated,the more angry I start to get. Moreover, whenever I try to divert my mind from sense pleasures the more strong the craving becomes after a few days, especially towards sexual activities. Whenever I try to control my sexual urges, they become strong mostly at the 6th or 7th day and then i indulge in masturbation. I am not able to control myself at these things especially the sexual ones. Please help.